from http://www.coleparmer.com

4. Which pumps can I run dry?

Peristaltic, piston pumps with ceramic heads, bellows pumps,
and diaphragm pumps can be run dry for any length of time.
Centrifugal, rotary vane, and gear pumps should not be run
dry; exceptions are if the gear or impeller is made of
a self-lubricating material such as RYTON in which case
the pump can be run for a few minutes while priming.

  At 09:23 AM 5/28/04, you wrote:
>"Submisible pump" -- cool, is that what you put in a stepford wife?
>(sorry  could not resist)
>Dave
>
>At 02:04 AM 5/28/04, you wrote:
>>Submisible pump ** is self-prime as long as the water level complies with
>>its requirement. Usually, must be above it.
>
>--
>http://www.piclist.com hint: The PICList is archived three different
>ways.  See http://www.piclist.com/#archives for details.

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.